.moon.icon:before {
  content: '';
  position: absolute;
  left: 6px;
  top: 1px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  -webkit-transform: rotate(45deg);
          transform: rotate(45deg);
  border-top: solid 1px transparent;
  border-bottom: solid 1px currentColor;
  border-left: solid 1px currentColor;
  border-right: solid 1px transparent;
}
